CN109705765A - A kind of linerless CPP cold lamination film and preparation method thereof - Google Patents
A kind of linerless CPP cold lamination film and preparation method thereof Download PDFInfo
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- CN109705765A CN109705765A CN201910096622.1A CN201910096622A CN109705765A CN 109705765 A CN109705765 A CN 109705765A CN 201910096622 A CN201910096622 A CN 201910096622A CN 109705765 A CN109705765 A CN 109705765A
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- 238000003475 lamination Methods 0.000 title claims abstract description 32
- 238000002360 preparation method Methods 0.000 title claims abstract description 13
- 239000012528 membrane Substances 0.000 claims abstract description 44
- 239000004820 Pressure-sensitive adhesive Substances 0.000 claims abstract description 27
- 239000011248 coating agent Substances 0.000 claims abstract description 21
- 238000000576 coating method Methods 0.000 claims abstract description 21
- 230000037452 priming Effects 0.000 claims abstract description 18
- 239000010410 layer Substances 0.000 claims description 92
- 239000008188 pellet Substances 0.000 claims description 24
- 230000004927 fusion Effects 0.000 claims description 11
- 239000000155 melt Substances 0.000 claims description 11
- 238000003851 corona treatment Methods 0.000 claims description 10
- 238000001035 drying Methods 0.000 claims description 10
- 238000002844 melting Methods 0.000 claims description 10
- 230000008018 melting Effects 0.000 claims description 10
- 229920005989 resin Polymers 0.000 claims description 9
- 239000011347 resin Substances 0.000 claims description 9
- 239000002344 surface layer Substances 0.000 claims description 9
- -1 propylene-ethylene-vinyl Chemical group 0.000 claims description 8
- 239000005038 ethylene vinyl acetate Substances 0.000 claims description 5
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 claims description 5
- 239000002952 polymeric resin Substances 0.000 claims description 5
- 229920003002 synthetic resin Polymers 0.000 claims description 5
- 238000001125 extrusion Methods 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 2
- 238000007766 curtain coating Methods 0.000 claims description 2
- 238000004513 sizing Methods 0.000 claims description 2
- 210000004379 membrane Anatomy 0.000 claims 6
- 210000002469 basement membrane Anatomy 0.000 claims 2
- 239000000463 material Substances 0.000 abstract description 19
- 238000000034 method Methods 0.000 abstract description 6
- 229910052736 halogen Inorganic materials 0.000 abstract description 4
- 150000002367 halogens Chemical class 0.000 abstract description 4
- 238000009776 industrial production Methods 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 239000004743 Polypropylene Substances 0.000 description 23
- 239000000047 product Substances 0.000 description 17
- 238000010422 painting Methods 0.000 description 8
- 239000004014 plasticizer Substances 0.000 description 5
- 238000005498 polishing Methods 0.000 description 5
- 238000010494 dissociation reaction Methods 0.000 description 4
- 230000005593 dissociations Effects 0.000 description 4
- 230000005484 gravity Effects 0.000 description 4
- 238000010791 quenching Methods 0.000 description 4
- 238000007493 shaping process Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000004049 embossing Methods 0.000 description 3
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 230000001680 brushing effect Effects 0.000 description 2
- 229910052804 chromium Inorganic materials 0.000 description 2
- 239000011651 chromium Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- 238000007747 plating Methods 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 229920002799 BoPET Polymers 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 125000002015 acyclic group Chemical group 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 239000012790 adhesive layer Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011127 biaxially oriented polypropylene Substances 0.000 description 1
- 229920006378 biaxially oriented polypropylene Polymers 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000008199 coating composition Substances 0.000 description 1
- 239000013065 commercial product Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920006267 polyester film Polymers 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000005488 sandblasting Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000005496 tempering Methods 0.000 description 1
- 229920006027 ternary co-polymer Polymers 0.000 description 1
Abstract
The invention discloses a kind of linerless CPP cold lamination films, it is made of CPP base membrane layer, priming coat and water-borne pressure sensitive adhesive adhesion coating from top to bottom, and the tensile strength of the CPP base membrane layer is within the scope of 600~1200g/25mm, elongation at break >=300%, upper surface dyne value≤30.Linerless CPP cold lamination film of the invention is using the excellent CPP film of flexibility as base membrane layer, PVC film instead of tradition containing halogen, and water-borne pressure sensitive adhesive adhesion coating is used, environmentally friendly VOC free discharge is directly wound without release paper or release film, it is convenient to use, it winds length up to 200 meters, i.e. the 4 of traditional product times effectively reduce the number of replacement coiled material, be conducive to continuous overlay film, greatly increase production efficiency.The invention also discloses the preparation method of linerless CPP cold lamination film, operating process controllability is strong, is conducive to large-scale industrial production, especially suitable for the overlay film on curved surface.
Description
Technical field
The present invention relates to advertising painting protective film field, in particular to a kind of cold lamination film.
Background technique
Domestic and international tradition is all to coat oiliness acrylic using soft pvc film as substrate with advertising painting protective film at present
Glue is wound after being covered with release paper or release film, and release paper (film) is used as auxiliary material, just can only after tearing
It is thrown away as waste product, causes a large amount of release papers (film) discarded.And soft pvc film is because containing halogen, itself is exactly a kind of acyclic
Protect material.In addition, needing to add a large amount of plasticiser to increase the flexibility of PVC film, plasticiser can pushing away with the time
Shifting is gradually oozed out from film, to pollute environment, while also destroying the viscosity of glue, influences the effect of the stickup to advertising painting picture
Fruit, and European Union's REACH standard and California, USA decree are limited using the plasticisers such as halogen-containing product and disabling DOP.It is another
Aspect, the PVC film due to being added to a large amount of plasticiser has excellent flexibility, for applying in the advertisement that veneer is curved surface
Air brushing is very suitable to, and general bidirectional stretching polypropylene film (BOPP film), polyester film (PET film), ductility is all bad, only
Suitable for plane pad pasting, and it is unsuitable for curved surface use.Therefore, develop it is a kind of be halogen-free it is traditional with the material substitution of plasticiser
Soft pvc film becomes the task of top priority for advertising painting industry.
Summary of the invention
It is an object of the invention in view of the above shortcomings of the prior art, provide a kind of linerless CPP cold lamination film, mention simultaneously
For the preparation method of the cold lamination film.
The technical solution used in the present invention is: a kind of linerless CPP cold lamination film, from top to bottom by CPP base membrane layer, bottom
Coating and water-borne pressure sensitive adhesive adhesion coating composition, the tensile strength of the CPP base membrane layer is within the scope of 600~1200g/25mm, fracture
Elongation >=300%, upper surface dyne value≤30.
As a further improvement of the foregoing solution, the CPP base membrane layer with a thickness of 31~35 μm.
As a further improvement of the foregoing solution, the lower surface of the CPP base membrane layer is 38 through sided corona treatment to a dyne value
~42.Specifically, the sided corona treatment is conducive to improve the adhesive force to priming coat.
As a further improvement of the foregoing solution, the priming coat with a thickness of 1~5 μm.
As a further improvement of the foregoing solution, the aqueous pressure sensitive adhesive layer with a thickness of 8~12 μm.
Specifically, the thickness limit of the priming coat and aqueous pressure sensitive adhesive layer is conducive to play the CPP base membrane layer excellent
Different ductility, while being conducive to improve the winding length and peel strength of entire CPP cold lamination film, to be more suitable for the wide of curved surface
Accuse the overlay film protection of air brushing.
As a kind of improvement of above scheme, the CPP base membrane layer is made of surface layer, casing play and bottom from top to bottom,
The surface layer is propylene-ethylene-vinyl acetate ter-polymer resin layer, and the casing play is melt index in 3.5~3.8g/
High fusion index PP pellet layer within the scope of 10min, the bottom are that melt index is low within the scope of 2.9~3.2g/10min
Melt index PP pellet layer.
Specifically, the propylene-ethylene-vinyl acetate ter-polymer resin layer is not only with the melt index 2.9
Between low melt index PP pellet layer within the scope of~3.2g/10min have dissociation power appropriate and also with it is described aqueous pressure-sensitive
Also there is dissociation power appropriate, so that directly winding and uncoiling can be realized between adhesive-layer.Wherein melt index 2.9~
Low melt index PP pellet layer within the scope of 3.2g/10min is conducive to for making sided corona treatment before subsequent coated bottom coating resin
Improve the storage validity period of entire CPP cold lamination film.
As a further improvement of the foregoing solution, the surface layer with a thickness of 2~3 μm, casing play with a thickness of 26~30 μ
M, bottom with a thickness of 2~3 μm.Wherein the restriction of skin depth advantageously reduces the adhesive force of aqueous pressure sensitive adhesive layer, thus
The CPP cold lamination film is set to reduce deflection when carrying out uncoiling.
Another kind as above scheme improves, and the CPP base membrane layer is made of casing play and bottom from top to bottom, described
The upper surface of casing play is equipped with embossed layer, and the casing play is height of the melt index within the scope of 3.5~3.8g/10min
Melt index PP pellet layer, the bottom are low melt index PP pellet of the melt index within the scope of 2.9~3.2g/10min
Layer.
Specifically, the formation of the embossed layer is by installing one group of embossed wheel additional, at upper wheel carved pattern or sandblasting
Reason is the chromium plating wheel of cloudy surface, and lower whorl is smooth surface (polishing) chromium plating wheel, adjusts contact of the wheel with lower whorl in control by cylinder pressure
Pressure, make film under high-temperature soft state in the casing play upper surface extrude decorative pattern, with reduce aqueous pressure sensitive adhesive layer with
The contact area of casing play, to make that there is dissociation power appropriate between casing play and aqueous pressure sensitive adhesive layer.At the embossing
Reason layer declines the transparency of the CPP cold lamination film, is particularly suitable for needing the CPP cold lamination film of atomized surface effect.
As a further improvement of the foregoing solution, the casing play with a thickness of 29~32 μm, bottom with a thickness of 2~3 μ
m.Wherein defining for underlayer thickness is conducive to form dissociation power appropriate with the casing play for being equipped with embossed layer, to make this
CPP cold lamination film carries out reducing deflection when uncoiling.
Another technical solution adopted by the present invention is: a kind of preparation side of linerless CPP cold lamination film as described above
Method comprising following processing step:
1) control die head temperature carries out melting co-extrusion for 260~265 DEG C, through curtain coating, sharp cooling roll sizing, 165~175 DEG C of perseverances
3~5 times of warm tempering, longitudinal stretching, obtain CPP base membrane layer；
2) CPP base membrane layer lower surface coats bottom coating resin after sided corona treatment, and drying obtains priming coat；
3) water-borne pressure sensitive adhesive stick is coated in priming coat lower surface, drying forms water-borne pressure sensitive adhesive adhesion coating, directly winds
Finished product.
Specifically, melting co-extrusion described in step 1) is respectively three-layer co-extruded according to the difference of CPP base membrane layer and bilayer is total
It squeezes.In addition, the machine direction tensile strength (Young's modulus) of film can increase when being increased due to draw ratio, but laterally (tensile strength) meeting
It is lower, is easy cracking；If draw ratio reduces, the flexibility of film increases, and easily deforms in its uncoiling, is unfavorable for covering
Film.
The beneficial effects of the present invention are:
Linerless CPP cold lamination film of the invention, as base membrane layer, is contained using the excellent CPP film of flexibility instead of tradition
There is the PVC film of halogen, and use water-borne pressure sensitive adhesive adhesion coating, environmentally friendly VOC free discharge is directly received without release paper or release film
Volume is easy to use, and winds length up to 200 meters, i.e. the 4 of traditional product times effectively reduce the number of replacement coiled material, are conducive to
Continuous overlay film, greatly increases production efficiency.On the other hand traditional product is also overcome to cause using release paper or release film
The drawbacks of a large amount of wastes.
Preparation method operating process controllability of the invention is strong, is conducive to large-scale industrial production, the nothing being prepared into
Lining paper CPP cold lamination film has excellent flexibility, and viscous force is good, uncoiling power is light, especially suitable for the overlay film on curved surface.
Specific embodiment
The present invention is specifically described below with reference to embodiment, in order to technical field personnel to of the invention
Understand.It is necessary to it is emphasized that embodiment is only intended to, the present invention will be further described herein, should not be understood as to this
The limitation of invention protection scope, fields person skilled in the art, the non-intrinsically safe that the present invention is made according to foregoing invention content
The modifications and adaptations of property, should still fall within protection scope of the present invention.Mentioned raw materials following simultaneously are unspecified, are
Commercial product；The processing step or preparation method not referred in detail be processing step known to a person skilled in the art or
Preparation method.
Embodiment 1
A kind of linerless CPP cold lamination film, from top to bottom by with a thickness of 31 μm CPP base membrane layer, with a thickness of 5 μm of primary coats
Layer and with a thickness of 8 μm water-borne pressure sensitive adhesive adhesion coating form, wherein the CPP base membrane layer from top to bottom by with a thickness of 3 μm surface layer,
It is formed with a thickness of 26 μm of casing plays and with a thickness of 2 μm of bottom, the surface layer is propylene-ethylene-vinyl acetate ternary polymerization
Resin layer, the casing play is high fusion index PP pellet layer of the melt index within the scope of 3.5~3.8g/10min, described
Bottom is low melt index PP pellet layer of the melt index within the scope of 2.9~3.2g/10min.
Preparation method:
1) by propylene-ethylene after drying-vinyl acetate ter-polymer resin, melt index in 3.5~3.8g/
High fusion index PP pellet, low melt index of the melt index within the scope of 2.9~3.2g/10min PP within the scope of 10min
Material is respectively placed in three-layer co-extruded each die head, and control die head temperature is 260 DEG C, melting coextrusion material, and control material is thick
Degree is 150 μm, and material is carried out shaping from the Quench roller surface that gravity stream is extended down to full 30~45 DEG C of water in surface polishing, is then passed through
Introduction is imported in 165 DEG C of constant temperature ovens and is tempered, and longitudinal stretching is carried out in constant temperature oven, and longitudinal stretching multiple is 5 times, is obtained
With a thickness of 31 μm of CPP base membrane layer；
2) CPP base membrane layer lower surface coats bottom coating resin after sided corona treatment to dyne value is 42, dries, obtains priming coat；
3) water-borne pressure sensitive adhesive stick is coated in priming coat lower surface, drying forms water-borne pressure sensitive adhesive adhesion coating, directly winds
1 finished product of embodiment.
The resulting CPP base membrane layer of step 1) and step 3) gained 1 finished product of embodiment carry out performance survey in Example 1 respectively
Examination, test result show the tensile strength of the CPP base membrane layer within the scope of 600~1200g/25mm, elongation at break >=
300%, upper surface dyne value≤30,180 degree peel strength >=3N/24mm of 1 finished product of embodiment, retentivity >=30min,
Longitudinally, laterally elongation at break > 300% is applicable to the overlay film protection of curved surface advertising painting.
Embodiment 2
A kind of linerless CPP cold lamination film, from top to bottom by with a thickness of 35 μm CPP base membrane layer, with a thickness of 1 μm of primary coat
Layer and with a thickness of 12 μm water-borne pressure sensitive adhesive adhesion coating form, wherein the CPP base membrane layer is from top to bottom by the table with a thickness of 2 μm
Layer forms with a thickness of 30 μm of casing plays and with a thickness of 3 μm of bottom, and the surface layer is total for propylene-ethylene-vinyl acetate ternary
Copolymer resin layer, the casing play are high fusion index PP pellet layer of the melt index within the scope of 3.5~3.8g/10min, institute
Stating bottom is low melt index PP pellet layer of the melt index within the scope of 2.9~3.2g/10min.
Preparation method:
1) by propylene-ethylene after drying-vinyl acetate ter-polymer resin, melt index in 3.5~3.8g/
High fusion index PP pellet, low melt index of the melt index within the scope of 2.9~3.2g/10min PP within the scope of 10min
Material is respectively placed in three-layer co-extruded each die head, and control die head temperature is 265 DEG C, melting coextrusion material, and control material is thick
Degree is 100 μm, and material is carried out shaping from the Quench roller surface that gravity stream is extended down to full 30~45 DEG C of water in surface polishing, is then passed through
Introduction is imported in 175 DEG C of constant temperature ovens and is tempered, and longitudinal stretching is carried out in constant temperature oven, and longitudinal stretching multiple is 3 times, is obtained
With a thickness of 35 μm of CPP base membrane layer；
2) CPP base membrane layer lower surface coats bottom coating resin after sided corona treatment to dyne value is 38, dries, obtains priming coat；
3) water-borne pressure sensitive adhesive stick is coated in priming coat lower surface, drying forms water-borne pressure sensitive adhesive adhesion coating, directly winds
2 finished product of embodiment.
The resulting CPP base membrane layer of step 1) and step 3) gained 2 finished product of embodiment carry out performance survey in Example 2 respectively
Examination, test result show the tensile strength of the CPP base membrane layer within the scope of 600~1200g/25mm, elongation at break >=
300%, upper surface dyne value≤30,180 degree peel strength >=3N/24mm of 2 finished product of embodiment, retentivity >=30min,
Longitudinally, laterally elongation at break > 300% is applicable to the overlay film protection of curved surface advertising painting.
Embodiment 3
A kind of linerless CPP cold lamination film, from top to bottom by with a thickness of 31 μm CPP base membrane layer, with a thickness of 5 μm of primary coats
Layer and with a thickness of 8 μm water-borne pressure sensitive adhesive adhesion coating form, wherein the CPP base membrane layer from top to bottom by upper surface be equipped with embossing
Manage the casing play with a thickness of 29 μm of layer and the bottom composition with a thickness of 2 μm, the casing play is melt index 3.5~
High fusion index PP pellet layer within the scope of 3.8g/10min, the bottom are melt index in 2.9~3.2g/10min range
Interior low melt index PP pellet layer.
Preparation method:
1) the high fusion index PP pellet by melt index after drying within the scope of 3.5~3.8g/10min, melting
Low melt index PP pellet of the index within the scope of 2.9~3.2g/10min is respectively placed in two die heads of double-layer coextrusion, control
Die head temperature processed is 265 DEG C, and melting coextrusion material, control material thickness is 100 μm, and material is extended down to surface polishing from gravity stream
The Quench roller surface of interior full 30~45 DEG C of water carries out shaping, and then imports in 175 DEG C of constant temperature ovens and is tempered through introduction,
Longitudinal stretching is carried out in constant temperature oven, longitudinal stretching multiple is 5 times, is embossed afterwards by upper surface of the embossed wheel to casing play
Processing forms embossed layer, obtains the CPP base membrane layer with a thickness of 31 μm；
2) CPP base membrane layer lower surface coats bottom coating resin after sided corona treatment to dyne value is 38, dries, obtains priming coat；
3) water-borne pressure sensitive adhesive stick is coated in priming coat lower surface, drying forms water-borne pressure sensitive adhesive adhesion coating, directly winds
3 finished product of embodiment.
The resulting CPP base membrane layer of step 1) and step 3) gained 3 finished product of embodiment carry out performance survey in Example 3 respectively
Examination, test result show the tensile strength of the CPP base membrane layer within the scope of 600~1200g/25mm, elongation at break >=
300%, upper surface dyne value≤30,180 degree peel strength >=3N/24mm of 3 finished product of embodiment, retentivity >=30min,
Longitudinally, laterally elongation at break > 300% is applicable to the overlay film protection of curved surface advertising painting.
Embodiment 4
A kind of linerless CPP cold lamination film, from top to bottom by with a thickness of 35 μm CPP base membrane layer, with a thickness of 1 μm of primary coat
Layer and with a thickness of 12 μm water-borne pressure sensitive adhesive adhesion coating form, wherein the CPP base membrane layer from top to bottom by upper surface be equipped with embossing
The casing play with a thickness of 32 μm of process layer and bottom composition with a thickness of 3 μm, the casing play is melt index 3.5~
High fusion index PP pellet layer within the scope of 3.8g/10min, the bottom are melt index in 2.9~3.2g/10min range
Interior low melt index PP pellet layer.
Preparation method:
1) the high fusion index PP pellet by melt index after drying within the scope of 3.5~3.8g/10min, melting
Low melt index PP pellet of the index within the scope of 2.9~3.2g/10min is respectively placed in two die heads of double-layer coextrusion, control
Die head temperature processed is 260 DEG C, and melting coextrusion material, control material thickness is 150 μm, and material is extended down to surface polishing from gravity stream
The Quench roller surface of interior full 30~45 DEG C of water carries out shaping, and then imports in 165 DEG C of constant temperature ovens and is tempered through introduction,
Longitudinal stretching is carried out in constant temperature oven, longitudinal stretching multiple is 3 times, is embossed afterwards by upper surface of the embossed wheel to casing play
Processing forms embossed layer, obtains the CPP base membrane layer with a thickness of 35 μm；
2) CPP base membrane layer lower surface coats bottom coating resin after sided corona treatment to dyne value is 42, dries, obtains priming coat；
3) water-borne pressure sensitive adhesive stick is coated in priming coat lower surface, drying forms water-borne pressure sensitive adhesive adhesion coating, directly winds
4 finished product of embodiment.
The resulting CPP base membrane layer of step 1) and step 3) gained 4 finished product of embodiment carry out performance survey in Example 4 respectively
Examination, test result show the tensile strength of the CPP base membrane layer within the scope of 600~1200g/25mm, elongation at break >=
300%, upper surface dyne value≤30,180 degree peel strength >=3N/24mm of 4 finished product of embodiment, retentivity >=30min,
Longitudinally, laterally elongation at break > 300% is applicable to the overlay film protection of curved surface advertising painting.
Above-described embodiment is the preferred embodiment of the present invention, all with similar technique of the invention and made equivalence changes,
It should belong to protection category of the invention.
Claims (10)
1. a kind of linerless CPP cold lamination film, it is characterised in that: glued from top to bottom by CPP base membrane layer, priming coat and water-borne pressure sensitive adhesive
Layer composition, the tensile strength of the CPP base membrane layer is within the scope of 600~1200g/25mm, elongation at break >=300%, upper table
Face dyne value≤30.
2. a kind of linerless CPP cold lamination film according to claim 1, it is characterised in that: the CPP base membrane layer with a thickness of
31~35 μm.
3. a kind of linerless CPP cold lamination film according to claim 1, it is characterised in that: the lower surface of the CPP base membrane layer
It is 38~42 through sided corona treatment to a dyne value.
4. a kind of linerless CPP cold lamination film according to claim 1, it is characterised in that: the priming coat with a thickness of 1~
5μm。
5. a kind of linerless CPP cold lamination film according to claim 1, it is characterised in that: the aqueous pressure sensitive adhesive layer
With a thickness of 8~12 μm.
6. described in any item a kind of linerless CPP cold lamination films according to claim 1~3, it is characterised in that: the CPP basement membrane
Layer is made of surface layer, casing play and bottom from top to bottom, and the surface layer is propylene-ethylene-vinyl acetate ter-polymer resin
Layer, the casing play are high fusion index PP pellet layer of the melt index within the scope of 3.5~3.8g/10min, and the bottom is
Low melt index PP pellet layer of the melt index within the scope of 2.9~3.2g/10min.
7. a kind of linerless CPP cold lamination film according to claim 6, it is characterised in that: the surface layer with a thickness of 2~3 μ
M, casing play with a thickness of 26~30 μm, bottom with a thickness of 2~3 μm.
8. described in any item a kind of linerless CPP cold lamination films according to claim 1~3, it is characterised in that: the CPP basement membrane
Layer is made of casing play and bottom from top to bottom, and the upper surface of the casing play is equipped with embossed layer, and the casing play is molten
Melting high fusion index PP pellet layer of the index within the scope of 3.5~3.8g/10min, the bottom is melt index 2.9~
Low melt index PP pellet layer within the scope of 3.2g/10min.
9. a kind of linerless CPP cold lamination film according to claim 8, it is characterised in that: the casing play with a thickness of 29
~32 μm, bottom with a thickness of 2~3 μm.
10. a kind of preparation method of linerless CPP cold lamination film as described in any one of claims 1 to 9, it is characterised in that including
Following processing step:
1) control die head temperature carries out melting co-extrusion for 260~265 DEG C, returns through curtain coating, sharp cooling roll sizing, 165~175 DEG C of constant temperature
Fire processing, 3~5 times of longitudinal stretching, obtain CPP base membrane layer；
2) CPP base membrane layer lower surface coats bottom coating resin after sided corona treatment, and drying obtains priming coat；
3) priming coat lower surface coat water-borne pressure sensitive adhesive stick, drying, formed water-borne pressure sensitive adhesive adhesion coating, directly wind at
Product.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910096622.1A CN109705765B (en) | 2019-01-31 | 2019-01-31 | Lining paper-free CPP cold mounting film and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910096622.1A CN109705765B (en) | 2019-01-31 | 2019-01-31 | Lining paper-free CPP cold mounting film and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114311898A (en) * | 2022-01-13 | 2022-04-12 | 广东德冠包装材料有限公司 | Polypropylene film for cold-mounted composite film, preparation method of polypropylene film and cold-mounted composite film |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2995869B2 (en) * | 1990-12-27 | 1999-12-27 | 東洋紡績株式会社 | Transversely tearable laminated film |
| CN106827750B (en) * | 2016-12-23 | 2018-03-20 | 广东德冠薄膜新材料股份有限公司 | Polypropylene film containing ethylene-vinyl acetate copolymer resin bed and preparation method thereof |
| CN107022322A (en) * | 2017-05-15 | 2017-08-08 | 苍南诚辉胶粘制品有限公司 | A embossing double faced adhesive tape for being easy to be vented |
| CN109263162B (en) * | 2018-08-27 | 2019-08-13 | 广东德冠包装材料有限公司 | A kind of Biaxially oriented polypropylene precoating ground and its preparation method and application |
| CN109266232B (en) * | 2018-09-26 | 2021-01-01 | 广东粤辉科技股份有限公司 | cpp bottom-free mute cold laminating film |
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2019
- 2019-01-31 CN CN201910096622.1A patent/CN109705765B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114311898A (en) * | 2022-01-13 | 2022-04-12 | 广东德冠包装材料有限公司 | Polypropylene film for cold-mounted composite film, preparation method of polypropylene film and cold-mounted composite film |
| CN114311898B (en) * | 2022-01-13 | 2023-10-13 | 广东德冠包装材料有限公司 | Polypropylene film for cold mounting composite film, preparation method thereof and cold mounting composite film |
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